puffed up appearance of dough is due to production of CO2 gas by microbes. Where do you think the bacteria for these fermentation came from
The puffed up appearance of dough is due to produation of carbon dioxide gas by yeast present in it.
This happens because yeast added to flour reproduces rapidly and produces carbon dioxide gas while respiring. This gas fills dough and increases its volume making it to rise or puff up.
This happens because yeast added to flour reproduces rapidly and produces carbon dioxide gas while respiring. This gas fills dough and increases its volume making it to rise or puff up.